﻿//====================================================================================================================
//Copyright (c) 2011 IdeaBlade
//====================================================================================================================
//Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated 
//documentation files (the "Software"), to deal in the Software without restriction, including without limitation 
//the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, 
//and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
//====================================================================================================================
//The above copyright notice and this permission notice shall be included in all copies or substantial portions of 
//the Software.
//====================================================================================================================
//THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE 
//WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS 
//OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 
//OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 
//====================================================================================================================

using System;
using System.ComponentModel.Composition;
using HelloWorld.Repository;
using IdeaBlade.Validation;

namespace HelloWorld.ViewModel
{
    // Export this part non-shared. We want to edit in a sandbox
    [Export, PartCreationPolicy(CreationPolicy.NonShared)]
    public class PerformOrderSave
    {
        private readonly IOrderManagmentRepositoryManager _repositoryManager;

        // Inject repository manager in order to create new and share repositories
        [ImportingConstructor]
        public PerformOrderSave(IOrderManagmentRepositoryManager repositoryManager)
        {
            _repositoryManager = repositoryManager;
        }

        private IOrderManagementRepository _repository;

        private IOrderManagementRepository GetRepository(Order order)
        {
            // Return the sandbox repository associated with the given order
            return _repository ?? (_repository = _repositoryManager.GetRepository(order.OrderID));
        }

        private Order _currentOrder;
        public Order CurrentOrder
        {
            get { return _currentOrder; }
            set
            {
                _repository = null; // Let's make sure we are not hanging on to an old repository
                // Import the order into our sandbox, so we can edit and save it.
                _currentOrder = GetRepository(value).ImportOrder(value);
            }
        }

        public void Execute(Action onSuccess = null, Action<Exception> onFail = null)
        {
            // TODO: Check business rules etc.

            GetRepository(CurrentOrder).Save(onSuccess, onFail);
        }
    }
}